An astronaut is said to be weightless when he/she travels in a satellite. Does it mean that the earth doesnot attract him/her?

ANSWER:
Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body.Thus,the gravitational force of earth is attracting them.

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Velocity=total displacement/timefrom house to store is 500 from store to neighbor is 200 therefore total displacement=500+200=700metrestherefore,700metres/910seconds=0.8metres per second

It is either a  proton or a neutron im almost positive. hope this .